Support for the internal molds of hollow castings.



G. 'WEINBEBR. SUPPORT FOR THE INTERNAL MOLDS 0F HOLLOW OASTINGS.AliPLIGA'IION FILED 001'. 2a, 1908. nmmwnn no. 17, 1909.

Patented July 19.1910.

wi/bmeooesz is illustrated in the accompanying UNITED STATES. PATENTOFFICE.

GREGOIR- WEINBEER, OF NUREMBERG, GERMANY, ASSIGNOR T0 MORITZ GARTNER, OFNEW YORK, N. Y.

SUPPORT FOR THE INTERNAL MOLDS OF HOLLOW CASTINGS.

Application filed October 28, 1908, Serial No. 459,966. Renewed December17, 1909.

To all whom it may concern:

Be it known that I, Gnneon WEINBEER, a subject of the Emperor ofGermany, residing at 69 Sulzbacherstrasse, Nuremberg, Bavaria, Germany,have invented certain new and useful Improvements in Supports for theInternal Molds of Hollow Castings, of

which the following is a specification.

The present invention pertains to supports for the internal mold or corewhen it is desired to produce a hollow casting. Hitherto such supports,which are intended to remain embedded in the casting, were constructedas a rigid body, and as the distance between the internal and externalmolds varies with the different sizes of the castings, there is thedisadvantage that a great variety of such supports is required. As, onthe other hand, it is not possible to provide supports for all possiblesizes that may be desired, it is necessary in each such case tospecially construct .the suitable support, whereby much time and moneyare wasted.

The object of my invention is to remedy this drawback, which Iaccomplish by providing a support that can be readily taken apart, andin which a very simple piece only needs to be made up in various sizes,while the rest of the support is uniform for every size of casting to beformed.

The support forming the subject of my invention consists of two plates,of which each is centrally punched and the lateral edges of the holesare bent at a right angle to project from the plate. Over saidprojecting edges a staple shaped piece of metal is slipped, that tightlyconnects the two plates and holds them apart at a certain height whichis to conform with the dis tance between the internal and externalmolds. It will be seen that owing to this construction, all that isnecessary to provide for different sizes of castings is to have avariety of such staples, all of uniform cross section but differentheights. The construction of a staple of a special size does not takemuch time, since it requires but the bending of a piece of metal.

To make my invention more clear the same drawing in which- Figure 1 is aperspective view of my new support, in which the parts are shownassembled to be ready for use; Fig. 2 is a perspective view of thesupport showing the Specification of Letters Patent.

Patented July 19, 1910.

Serial No. 533,698.

parts detached from one another; Fig. 3 is a plan view of the support,of which one of the plates is removed; Fig. 4 is a vertical crosssection of the support; Fig. 5 a vertical longitudinal section thereof,and Figs. 6 and 7 show modifications thereof.

With reference to the drawing a, 6 denote equally sized metal platescentrally punched as at c. The lateral edges of said holes 0 aredbent ata right angle to the plates, as at e is a piece of metal bent in shapeof a staple, and the free ends f of which are bent under a right angletoward one another, leaving a recess 9 between themselves. This piece isadapted to be tightly slipped over the projecting lateral edges of theholes 0 of the plates and to hold the latter apart at a certain heightfrom one another.

When the support is properly placed into the mold, the core resting onthe upper plate thereof, the metal cast into the mold will envelop theentire support and, through the recess g, fill the inner free spaceformed by the staple shaped piece 6.

While the plates or and b are all of uniform size, the staple shapedpieces 6 connect ing the two plates, can be made of various heights, butall of uniform cross section, so that when the support is to be used fora different size of casting, it is only necessary to exchange the staplefor one of a larger height.

In Fig. 6 a modification is shown in which, instead of one, two suchstaples e are pro vided between the plates.

In Fig. 7 a second modification is shown in which, instead of flatplates, cylindrically curved ones are used to be available forcylindrical castings.

It is understood that the construction of the support may be modified invarious ways without deviating from the spirit of my invention.

What I claim and desire to secure by Letters Patent is 1. The hereindescribed support for the internal mold or core of hollow castings,consisting of perforated parts, and a hollow perforated piece detachablyconnecting said parts together.

. 2. A support for the internal mold or core of hollow castings,comprising centrally perforated parts formed with projections around theperforations, and a perforated holes being bent to form projections, andstaple-shaped metal pieces tightly but de taehably engaging saidprojections to con- 15 nect the plates with and hold the same apart fromone another.

In testimony whereof I aflix my signature in presence of two Witnesses.

GREGOR XVEINBEER.

Witnesses HERMANN DOEIILEMANN, ABRAHAM GARTNER.

